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S. H. PAULMIER. KEY FASTBN-ER.

Patented Sept. 6, 1887.

WITNESSES INVENTOR W/Qw. aw M B ATTORNEYS.

N. PEIERS, Phom-Litbagnphzn Washington, D. c.

UNITED STATES Parana @rrrcn.

STEPHEN H. PAULMIER, OF MADISON, NEW JERSEY.

KEY-FASTENER.

SPECIFICATION forming part of Letters Patent No, 369,468, dated September 6,1887.

Application filed July 28, 188?.

To aZZ whom it may concern.-

Be it k nown that I, STEPHEN H. PAULMIER, of Madison, in the county of Morris and State of New Jersey, have invented a new and 1m proved KeyFastener, of which the following is a full, clear, and exact description.

The object of my invention is to provide a lock with a device which, while it does not necessitate any special construction of the key or of the general mechanism of the lock, nor yet interfere with the entry or removal of the key, will preventthe key when left in the lock from working or being thrown out of the latteras, for instance, by the slamming or shutting of a door to which the lock is applied.

To these ends the invention consists in an attachment to the lock of a device that automatically adjusts itself to permit of the free entry of the key into the lock, and that provides for the ready removal of the key, when required, by the ordinary manipulation there of, but which, after the bolt has been acted upon by the key, serves to retain the latter in the lock by holding the bit of the key out of line with the key-hole, substantially as hereinafter described.

The invention is not restricted to any par ticular kind of lock.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 represents a rear view of a look, as seen from its interior, with a key-retaining device embodying my invention applied, and showingthc key of the lock as being held by said device from dropping out of the key-hole. Fig. 2- is an irregular transverse section of the same upon the line it a: in Fig. 1; and Fig. 3 is a view, in perspective, of said key-retaining device detached from the lock.

A is a lock of ordinary or any suitable construction; 7), its bolt, and 0 its keyhole.

B is the key, and d the bit thereof.

Pivoted, as at e, to and within the loclccase, directly below the key-ho1e,is a pendent weight or guard, D, provided with two upwardly-extending arms or wings, f f, between which the bit (1 of the key, when entering the lock, passes,

said guard automatically adjusting itself to secure such position for the arms or wings ff.

Serial No. 245,518. (No model.)

When manipulating the key either to sheet or drawback the bolt of the lock, the bit d, acting against one or other of the wingsf, will swing the pivoted or pendent guard D so as to clear such arm or wing; but after the key has thus passed the arm or wing fin its way the guard or weight D will swing back to its normal position, and so that the bit d of the key will be free to rest against one or the other of the wingsf, on one side or out of line with the key-hole, and so restrain the key-bit d from being carried in line with the key-hole. When. however, it is required to take the key out of the lock, then it is only necessary to manipulate the key so as to swing the guard D and bring the bit of the key in line with the keyhole. Fig. 1 of the drawings shows, by full and dotted lines, the bit of the key in three different positions,in accordance with the fore going description.

Theinvention is notrcstricted to the precise construction or shape of the movable guard or check D, so long as it will operate as a movable rest or support for the bit of the key to retain the key in the lock and prevent it from working or being shaken out, substantiallyin the manner described. Said guard may be readily attached to almost any lock, and does not necessitate any special construction of the key.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, isr l. The combination, with a lock, of an attached key-fastener adapted to control the keyhole of the lock and constituting a movable rest or support for the bit of the key out of line with the key-hole, substantially as specified.

2. The within-described key-fastener for looks, the same consisting of a swinging weighted guard, D, having upwardly-extending arms or wingsff for operation in relation with the key-hole of the lock, essentially as herein set forth.

STEPHEN H. PAULMIER.

Witnesses:

A. G. RATHBUN, HENRY Nonwoon. 

